Rocka Large Hydraulic Breaker Hammer

Specializing in high-quality attachments like the ROCKA hydraulic breaker, quick hitch coupler, vibratory plate compactor, ripper, and hydraulic post drivers, Rocka offers products engineered for durability and performance.

Commodity name： Rocka Large Hydraulic Breaker Hammer

Category:

Silence Type Hydraulic Breaker

E-mail:

info@rockageattachments.com

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Product Description

Rocka SK81 SK121 Series Heavy-Duty Breaker (for Noise-Controlled Sites)

Yantai Rocka Machinery Co., Ltd. (rockahammer.com), a leading Chinese excavator attachment manufacturer since 2009, offers the ROCKA Large Box (Silent) Type Hydraulic Breaker for 18–55 ton excavators. Designed for heavy demolition, quarrying, and urban construction, it delivers high impact power with significantly reduced noise levels.

Our silent series minimizes operational sound without compromising power, ensuring compliance and community comfort.

Specification	Unit	SK81	SK100	SK121	SK131	SK141	SK151
Suitable Excavator	ton	18~26	25~30	28~35	30~45	35~45	40~55
Operating Weight	kg	1978	2279	2896	3117	3399	4390
Impact Energy Class	ft/lbs	5000	6000	7500	8500	10000	12000
Impact Rate	bpm	350~500	300~450	300~450	250~400	250~350	250~350
Required Oil Flow	gal/min	31.7~47.6	39.6~55.5	47.6~63.4	50.8~68.7	50.8~68.7	55.5~76.7
Setting Pressure	bar	210	210	210	210	210	210
Setting Pressure	psi	2987	2987	2987	2987	2987	2987
Operating Pressure	bar	160~180	160~180	160~180	160~180	160~180	160~180
Operating Pressure	psi	2276~2560	2276~2560	2276~2560	2276~2560	2276~2560	2276~2560
Hose Diameter	in.	1	1	1¼	1¼	1¼	1¼
Tool(Chisel) Diameter	in.	5.5	5.9	6.1	6.5	6.5	7.0
Tool(Chisel) Diameter	mm	140	150	155	165	165	165

* Every hydraulic breaker with 1 set gas-charging kit with nitrogen bottle, 2 pcs hydraulic hose, 1 set tools with toolbox, 2 piece chisel

* From SK20~ SK43 model warranty for 2 years, without wear and tear parts.

* From SK45~ SK151 mode warranty for 1 year ,without wear and tear parts.

Key Features

Silent Box Design – Fully enclosed structure minimizes noise pollution, ideal for urban and residential projects.
High Impact Force – Hydraulic + nitrogen gas system ensures efficient breaking of reinforced concrete and rock.
Durable Build – Heat-treated cylinders and pistons for extended service life.
Vibration Reduction – Built-in shock absorbers protect the carrier excavator and reduce operator fatigue.
Multiple Models – Available for excavators from 18 to 55 tons.

OEM Customization Services

We offer flexible OEM customization to meet your specific needs:

Custom colors to match your fleet or brand
Custom logo and branding application
Tailored specifications per project requirements

Why ROCKA?

Established manufacturer with global export experience
Service networks in North America, Australia, and beyond
Strict quality control to international standards

OEM

Your designs and standards are the absolute benchmark for our production

CUSTOMER SATISFACTION IS OUR GREATEST REWARD

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